Bring the thrill of gravity-defying marble runs into your home with the Ravensburger Gravitrax Spiral Expansion Set 268863. This exciting addition to your Gravitrax collection allows young engineers, both boys and girls aged 8 and up, to unleash their creativity and design intricate track systems. With the spiral pieces included in this set, watch in awe as marbles twist and turn through gravity-powered courses, captivating players and onlookers alike. Experience the magic of continuous motion and problem-solving as you experiment with different layouts, angles, and speeds. The Ravensburger Gravitrax Spiral Expansion Set 268863 not only provides hours of entertainment but also helps develop critical thinking skills and spatial awareness in a fun and engaging way. Measuring at 19 x 19 x 5 cm, this compact yet dynamic set is perfect for solo play or sharing the excitement with friends and family. Upgrade your Gravitrax collection today and take marble racing to new heights with the Spiral Expansion Set!